What is so hard about teaching?

Well I'll tell you. This is a conversation I had with some kids today.

Me: Okay everyone let's start at the Coda. Ready....one, two...
Sweet trumpet kid: Wait! What's a Coda?
Me: It's that symbol in measure 53 with the word Coda next to it.
Sweet trumpte kid: Oh, okay.
Me: Alright here we go. One, two, ready, go.

All brass plays...sounds like crap.

Me: Okay, is everyone AT the Coda?
Strange trombone kid: What do you mean by the Coda?
Me: (sigh) Here, let me show it to you on the board. (I then proceed to write the symbol on the board). Are there any questions?

...crickets...

Me: Alright, let's try this again. At the Coda. One, two, ready, go.

Clueless french horn girl not even playing.

Me: French horns, do you know where we are?
Clueless: What's a Coda?

I love my job...I love my job...I love my job...